Types of Blood Specimens: A Comprehensive Guide for Phlebotomy Students

Question 1

Which blood specimen is collected in a lavender-top tube and used for blood cell counts?

Accepted Answer

EDTA Whole Blood

Answer

Serum

Answer

Plasma

Answer

Heparin Whole Blood

Question 2

For a complete blood count (CBC) analysis, which blood specimen is collected in a lavender-top tube?

Accepted Answer

Whole blood

Answer

Serum

Answer

Plasma

Question 3

What is the main reason for collecting blood in a tube with a green stopper and a gel separator?

Accepted Answer

To obtain serum

Answer

To obtain plasma

Answer

To obtain whole blood

Question 4

Which type of blood specimen is collected in a lavender-topped tube with EDTA?

Accepted Answer

Complete blood count (CBC)

Answer

Coagulation panel

Answer

Blood culture

Question 5

What is the appropriate container for collecting a specimen for a coagulation panel?

Accepted Answer

Light blue-topped tube with sodium citrate

Answer

Lavender-topped tube with EDTA

Answer

Red-topped tube with no anticoagulant

Answer

Green-topped tube with heparin

Question 6

Which of the following specimen requires the use of a special blood culture bottle?

Accepted Answer

Blood culture

Answer

Coagulation panel

Answer

CBC

Answer

Chemistry panel

Question 7

What is the purpose of collecting a fasting blood glucose specimen?

Accepted Answer

To measure glucose levels after a period of fasting

Answer

To assess thyroid function

Answer

To check for anemia

Question 8

Which of the following blood collection tubes does not contain an anticoagulant?

Accepted Answer

Red-topped tube

Answer

Light blue-topped tube

Answer

Green-topped tube

Answer

Lavender-topped tube

Question 9

Which type of blood specimen is used to detect antibodies?

Accepted Answer

Serum

Answer

Plasma

Answer

Whole blood

Answer

Hemolyzed blood

Question 10

What is the primary purpose of a hemostasis band?

Accepted Answer

To stop bleeding after blood collection

Answer

To label the blood specimen

Answer

To prevent infection

Answer

To warm the blood sample

Question 11

Which of the following types of blood specimens is the most commonly collected?

Accepted Answer

Venous blood

Answer

Cerebrospinal fluid

Answer

Capillary blood

Answer

Arterial blood

Question 12

When performing venipuncture on an adult, what is the preferred vein to access?

Accepted Answer

Median cubital vein

Answer

Radial vein

Answer

Dorsal hand vein

Answer

Femoral vein

Question 13

What is the proper sequence of information that should be included on a blood specimen label?

Accepted Answer

Patient's name, date and time of collection, type of specimen

Answer

Type of specimen, date of birth, time of collection

Answer

Patient's name, physician's name, date of birth

Question 14

Which of the following is a type of blood culture?

Accepted Answer

Aerobic

Answer

Complete blood count

Answer

Gram stain

Answer

Electrolyte panel

Question 15

For a complete blood count (CBC), what type of blood specimen should be collected in a lavender-top tube?

Accepted Answer

EDTA (Ethylenediaminetetraacetic acid)

Answer

Sodium citrate

Answer

Heparin

Question 16

What is the primary purpose of collecting a blood specimen in a green-top tube with sodium heparin?

Accepted Answer

Chemistry and electrolyte analysis

Answer

Serology testing

Answer

Blood culture

Answer

Coagulation studies

Question 17

Which type of blood specimen is collected in a red-top tube and allowed to clot before centrifugation?

Accepted Answer

Serum

Answer

Plasma

Answer

Whole blood

Question 18

For blood culture testing, what type of blood specimen is collected in a blue-top tube?

Accepted Answer

Venous blood

Answer

Capillary blood

Answer

Arterial blood

Answer

Serum

Question 19

What is the primary reason for using a capillary puncture to obtain a blood specimen?

Accepted Answer

To collect a small volume of blood from the finger or heel

Answer

To obtain venous blood

Answer

To perform a blood culture

Question 20

What is the primary purpose of collecting an arterial blood specimen?

Accepted Answer

To measure blood gas levels

Answer

To analyze electrolytes

Answer

To check for blood clotting disorders

Answer

To perform blood transfusions

Question 21

Which type of blood specimen is collected in a blue-top tube and used for coagulation testing?

Accepted Answer

Sodium citrate

Answer

Heparin

Answer

EDTA

Answer

Serum separator

Question 22

What is the optimal site for collecting a capillary blood specimen from a newborn infant?

Accepted Answer

Heel

Answer

Forearm

Answer

Earlobe

Answer

Fingertip

Question 23

Which type of blood specimen is collected in a light green-top tube and used for stat (immediate) coagulation testing?

Accepted Answer

Lithium heparin

Answer

Sodium citrate

Answer

EDTA

Question 24

What is the key difference between serum and plasma?

Accepted Answer

Serum does not contain clotting factors

Answer

Plasma contains more proteins

Answer

Plasma has a higher viscosity

Answer

Serum is collected in a green-top tube

Question 25

Which type of blood specimen is collected from a vein?

Accepted Answer

Venous blood

Answer

Both venous and arterial blood

Answer

Capillary blood

Answer

Arterial blood

Question 26

Which type of blood specimen is commonly used for hematology tests, such as complete blood count (CBC)?

Accepted Answer

EDTA tube

Answer

Heparin tube

Answer

Citrate tube

Answer

Serum tube

Question 27

Which type of blood specimen is used for coagulation tests, such as prothrombin time (PT) and activated partial thromboplastin time (aPTT)?

Accepted Answer

Citrate tube

Answer

EDTA tube

Answer

Serum tube

Question 28

Which type of blood specimen is used for blood chemistry tests, such as electrolytes, glucose, and liver function tests?

Accepted Answer

Serum tube

Answer

Citrate tube

Answer

Heparin tube

Answer

EDTA tube

Question 29

Which type of blood specimen is used for tests that detect antibodies to HIV, the virus that causes AIDS?

Accepted Answer

Serum tube

Answer

Citrate tube

Answer

Heparin tube

Answer

EDTA tube

Question 30

Which type of blood specimen is used for serological tests that detect antibodies to syphilis, a sexually transmitted infection?

Accepted Answer

Serum tube

Answer

EDTA tube

Answer

Heparin tube

Answer

Citrate tube

Question 31

Which type of blood specimen is used for lipid tests, such as cholesterol and triglycerides, which are important for assessing heart health?

Accepted Answer

Serum tube

Answer

Heparin tube

Answer

Citrate tube

Answer

EDTA tube

Question 32

Which type of blood specimen is used for tests that measure thyroid hormones, which are essential for regulating metabolism?

Accepted Answer

Serum tube

Answer

Heparin tube

Answer

EDTA tube

Answer

Citrate tube

Question 33

Which type of blood specimen is most commonly collected?

Accepted Answer

Venous

Answer

Arterial

Answer

Finger stick

Answer

Capillary

Question 34

Which additive is commonly used for coagulation studies?

Accepted Answer

Sodium citrate

Answer

Lithium heparin

Answer

Heparin

Answer

EDTA

Question 35

Which additive is commonly used for chemistry panels?

Accepted Answer

Sodium fluoride

Answer

Heparin

Answer

Lithium heparin

Answer

Sodium citrate

Question 36

For blood bank specimens, which additive is commonly used?

Accepted Answer

CPD

Answer

Sodium fluoride

Answer

Lithium heparin

Answer

EDTA

Question 37

Which container type is commonly used for blood cultures?

Accepted Answer

BACTEC bottle

Answer

Blood bank bag

Answer

Microtainer

Question 38

Which of the following is the preferred site for drawing a capillary blood specimen from an infant?

Accepted Answer

Heel

Answer

Earlobe

Answer

Great toe

Answer

Fingertip

Question 39

What type of blood specimen is used for blood typing and crossmatching?

Accepted Answer

Vacutainer with EDTA

Answer

Serum separator tube

Answer

Vacutainer with heparin

Answer

Microtainer with citrate

Question 40

Which of the following is a contraindication for drawing a blood specimen from the antecubital fossa?

Accepted Answer

Presence of an IV line in the same arm

Answer

Patient is a child

Answer

Patient has a history of fainting

Question 41

What is the minimum volume of blood required to fill a microtainer tube?

Accepted Answer

0.5 mL

Answer

1.5 mL

Answer

2.0 mL

Answer

1.0 mL

Question 42

Which of the following is an example of an arterial blood specimen?

Accepted Answer

Radial artery puncture

Answer

Capillary puncture

Answer

Bone marrow aspiration

Answer

Venipuncture

Question 43

What is the function of a serum separator tube?

Accepted Answer

To facilitate the separation of serum from clotted blood

Answer

To collect a blood specimen for coagulation studies

Answer

To collect a blood specimen for microbiology testing

Answer

To prevent blood from clotting

Question 44

Which type of blood specimen is collected in a serum separation tube and contains no anticoagulant?

Accepted Answer

Serum

Answer

Heparinized plasma

Answer

EDTA plasma

Answer

Citrated blood

Question 45

Which anticoagulant is present in EDTA tubes and inhibits the activity of calcium ions?

Accepted Answer

Ethylenediaminetetraacetic acid (EDTA)

Answer

Heparin

Answer

Citrate

Question 46

Which type of blood specimen is collected in a lavender-top tube and contains EDTA as an anticoagulant?

Accepted Answer

EDTA plasma

Answer

Heparin plasma

Answer

Whole blood

Answer

Serum

Question 47

What is the primary purpose of collecting a whole blood specimen?

Accepted Answer

To perform a complete blood count (CBC)

Answer

To screen for infectious diseases

Answer

To measure glucose levels

Answer

To detect antibodies

Question 48

Which of the following is a commonly used blood smear stain?

Accepted Answer

Wright-Giemsa stain

Answer

Gram stain

Answer

Pap stain

Answer

KOH preparation

Question 49

What is the main purpose of a coagulation panel?

Accepted Answer

To evaluate the blood's ability to clot

Answer

To detect infections

Answer

To screen for genetic disorders

Answer

To measure hormone levels

Question 50

What is the recommended order of collection for blood specimens?

Accepted Answer

Blood culture, routine blood tests, coagulation tests

Answer

Routine blood tests, blood culture, coagulation tests

Answer

Coagulation tests, routine blood tests, blood culture

Question 51

What is the best practice for labeling blood specimens?

Accepted Answer

Use two patient identifiers and the date and time of collection

Answer

Write the patient's information on a separate label

Answer

Use only the patient's name and date of birth